process for dyeing natural or synthetic polyamide fiber materials, which comprises dyeing these fiber materials with at least one anionic acid dye of the formula ##STR1## and treating the fiber material mentioned, during or after the dyeing process, with a colorless fixing agent which contains sulfo or sulfato groups and contains at least two fiber-reactive groups, where
R1 and R2 independently of one another are hydrogen or substituted or unsubstituted C1 -C4 alkyl,
X1 is substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, or the radical of the formula --N(R2)--X1 is a ring, which may contain further heteroatoms,
Y1 is a radical of the formula ##STR2## in which B1 is a colorless organic bridge member,
R3 is hydrogen or substituted or unsubstituted C1 -C4 alkyl and
R4 is hydrogen or substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, and
A1 is as defined in claim 1.
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1. A process for dyeing a natural or synthetic polyamide fibre material, which comprises applying to said fibre material at least one anionic acid dye of the formula ##STR72## and treating the fibre material mentioned, during or after the dyeing process, with a colourless fixing agent which contains sulfo or sulfato groups and contains at least two fibre-reactive groups, where R1 and R2 independently of one another are hydrogen or substituted or unsubstituted C1 -C4 alkyl,
X1 is substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, or the radical of the formula --N(R2)-X1 is a ring, which may contain further heteroatoms, Y1 is a radical of the formula ##STR73## in which B1 is a colourless organic bridge member, R3 is hydrogen or substituted or unsubstituted C1 -C4 alkyl and R4 is hydrogen or substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, and A1 is the radical of a monoazo dye of the formula ##STR74## in which the dashed lines represent an optional naphthalene ring, K1 is a radical of the benzene or naphthalene series or a heterocyclic radical and (R5)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl and sulfo, or A1 is the radical of a polyazo, metal complex azo, anthraquinone, formazan, phthalocyanine or dioxazine dye.
2. A process according to
R1 and R2 independently of one another are hydrogen or C1 -C4 alkyl.
3. A process according to
X1 is C1 -C8 alkyl, C5 -C7 cycloalkyl which is unsubstituted or substituted by C1 -C4 alkyl, or phenyl or naphthyl which are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 -alkanoylamino, ureido, halogen, carboxyl or sulfo.
4. A process according to
X1 is phenyl which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 -alkanoylamino, ureido, halogen, carboxyl or sulfo.
5. A process according to
B1 is a C1 -C10 alkylene radical which may be interrupted by 1, 2 or 3 members from the group consisting of --NH--, --N(CH3)-- or --O-- and is unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl.
7. A process according to
R4 is hydrogen or C1 -C8 alkyl which is unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl.
9. A process according to
R3 and R4 independently of one another are hydrogen or C1 -C4 alkyl and B1 is a C1 -C10 alkylene radical.
11. A process according to
A1 is a radical of the formula (3) or the radical of a disazo or anthraquinone dye.
12. A process according to
A1 is a radical of the formula (3) or a radical of the formula ##STR75## in which the dashed lines represent an optional naphthalene ring (R11)0-3 and (R12)0-3 independently of one another are 0 to 3 identical or different subtituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino and N-mono- or N,N-di-C1 -C4 alkylamino, and K2 is a radical of the benzene or naphthalene series or a heterocyclic radical, or is a radical of the formula ##STR76## in which G is a phenylene radical which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo, or a cyclohexylene, phenylenemethylene or C2 -C6 alkylene radical.
13. A process according to
A1 is a radical of the formula ##STR77## in which the dashed lines in formula (10) represent an optional naphthalene ring (R5)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, halogen and sulfo, (R11)0-3 and (R12)0-3 independently of one another are 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino and N-mono- or N,N-di-C1 -C4 alkylamino, (R13)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl and sulfo, and K1 and K2 independently of one another are a radical of the formula ##STR78## in which R6 is methyl or carboxyl, R7 is amino or hydroxyl and (R8)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl and sulfo, or a radical of the formula ##STR79## in which R9 is hydrogen, amino or N-mono- or N,N-di-C1 -C4 alkylamino and R10 is hydrogen or hydroxyl.
14. A process according to
Y2 and Y3 independently of one another are fluorine, chlorine, amino, N-mono- or N,N-di-C1 -C4 alkylamino which is unsubstituted or substituted in the alkyl moiety, C5 -C7 cycloalkylamino which is unsubstituted or substituted in the cycloalkyl ring, phenylamino or N-C1 -C4 alkyl-N-phenylamino which are unsubstituted or substituted in the phenyl ring, or N-heterocyclic radicals, which may contain further hetero atoms, L1 and L2 are a colourless, organic bridge member, n is the number 0 or 1, W1, W2, W3, W4 and W5 independently of one another are a radical of the formula ##STR81## in which R16 and R17 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl or sulfo, Z is a radical of the formula --CH2 CH2 -U or --CH═CH2 and U is a leaving group, and R is a radical of the formula
--SO2 Z (20a), --CONH--(CH2)2-3 --SO2 Z (20b), --NH--CO--CH(Hal)--CH2 --Hal (20c), --NH--CO--C(Hal)═CH2 ( 20d), --NH--CO--CH═CH2 ( 20e) or --NH--CO--CH2 Cl (20f) and Hal is halogen and Z is as defined above. |
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The present invention relates to a process for dyeing natural or synthetic polyamide fibre materials using fixing agents, and to novel fixing agents.
The practice of dyeing has recently led to increased requirements regarding the quality of the dyeings and the profitability of the dyeing process. There is consequently still a need for novel dyeing processes which have improved properties, in particular in respect of application and the fastness properties of the dyeings obtained.
Processes according to which the dyeings obtained have good fastness properties, in particular wet fastness properties, coupled with a high degree of exhaustion and a good dyeing yield, are now required for dyeing. These requirements are not met in all their properties by the known processes.
The present invention is therefore based on the object of discovering novel, improved processes for dyeing fibre materials which have, to a high degree, the qualities characterized above.
It has been found that the object described is largely achieved by the process defined below.
The present invention therefore relates to a process for dyeing natural or synthetic polyamide fibre materials, which comprises dyeing these fibre materials with at least one anionic acid dye of the formula ##STR3## and treating the fibre material mentioned, during or after the dyeing process, with a colourless fixing agent which contains sulfo or sulfato groups and contains at least two fibre-reactive groups, where
R1 and R2 independently of one another are hydrogen or substituted or unsubstituted C1 -C4 alkyl,
X1 is substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, or the radical of the formula --N(R2)--X1 is a ring, which may contain further hetero atoms,
Y1 is a radical of the formula ##STR4## in which B1 is a colourless organic bridge member,
R3 is hydrogen or substituted or unsubstituted C1 -C4 alkyl and
R4 is hydrogen or substituted or unsubstituted C1 -C8 alkyl, C5 -C7 cycloalkyl, phenyl or naphthyl, and
A1 is the radical of a monoazo dye of the formula ##STR5## in which K1 is a radical of the benzene or naphthalene series or a heterocyclic radical and (R5)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl and sulfo, or A1 is the radical of a polyazo, metal complex azo, anthraquinone, formazan, phthalocyanine or dioxazine dye.
C1 -C4 alkyl R2, R2 and R3 independently of one another are, for example methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The alkyl radicals mentioned can be unsubstituted or substituted, for example by hydroxyl, sulfo, sulfato, cyano or carboxyl. Preferred alkyl radicals are the corresponding unsubstituted radicals.
C1 -C4 alkyl R5 is, for example, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl.
C1 -C8 alkyl R4 and X1 independently of one another are preferably C1 -C4 alkyl radicals, for example methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The alkyl radicals mentioned can be unsubstituted or substituted, for example by hydroxyl, sulfo, sulfato, cyano or carboxyl. The unsubstituted radicals are preferred here.
C1 -C4 alkoxy R5 is, for example, methoxy, ethoxy, propoxy, isopropoxy, butoxy or isobutoxy, in particular methoxy.
C2 -C4 alkanoylamino R5 is, in particular, acetylamino or propionylamino, preferably acetylamino.
Halogen R5 is, for example, fluorine, chlorine or bromine, in particular chlorine.
A ring which may contain further hetero atoms for the radical of the formula --N(R2)--X1 is, for example, morpholino.
C5 -C7 cycloalkyl X1 and R4 is, in particular, the cyclohexyl radical. The cycloalkyl radicals mentioned can be unsubstituted or substituted, for example by C1 -C4 alkyl, in particular by methyl.
Phenyl or naphthyl X1 and R4 are, in addition to the corresponding unsubstituted radicals, the radicals substituted, for example, by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, amino, hydroxyl, ureido, halogen, carboxyl or sulfo.
A colourless organic bridge member B1 is, for example, substituted or unsubstituted C1 -C12 alkylene, which can be interrupted by 1, 2 or 3 members from the group consisting of --NH--, --N(CH3)-- or --O--, or substituted or unsubstituted C5 -C7 cycloalkylene, phenylene or naphthylene. C5 -C7 cycloalkylene here is, in particular, cyclohexylene, which can be unsubstituted or substituted, for example by C1 -C4 alkyl, in particular by methyl. Substituents here of the phenylene and napthylene radicals mentioned are, for example, C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, amino, hydroxyl, ureido, halogen, carboxyl or sulfo, in particular C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo. Substituents of the C1 -C12 alkylene radicals mentioned are, for example hydroxyl, sulfo, sulfato, cyano or carboxyl. The C1 -C12 -alkylene radicals are preferably unsubstituted.
R1 and R2 are preferably independently of one another hydrogen or C1 -C4 alkyl. R1 is particularly preferably hydrogen, methyl or ethyl, in particular hydrogen. R2 is particularly preferably C1 -C4 alkyl, in particular methyl or ethyl, and preferably ethyl.
(R5)0-3 is preferably 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, halogen and sulfo. The radicals of the formula (3) preferably contain only one substituent R5, which is hydrogen or sulfo, in particular sulfo.
X1 is preferably C1 -C8 alkyl, C5 -C7 -cycloalkyl which is unsubstituted or substituted by C1 -C4 alkyl, or phenyl or naphthyl which are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl or sulfo. The phenyl radical, which can be substituted as defined above, is particularly preferred here. X1 is especially preferably phenyl which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, preferably unsubstituted phenyl. R2 here is particularly preferably C1 -C4 alkyl, in particular methyl or ethyl and preferably ethyl.
B1 is preferably a C1 -C12 alkylene radical, in particular a C1 -C10 alkylene radical, which can be interrupted by 1, 2 or 3 members from the group consisting of --NH--, --N(CH3)-- or, in particular, --O--, and is unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl. The corresponding unsubstituted alkylene radicals are of particular interest here.
B1 is particularly preferably a C1 -C10 alkylene radical, in particular a C1 -C6alkylene radical, and preferably a C1 -C4 alkylene radical. Particularly interesting radicals B1 are those of the formulae --CH2 --, --CH2 CH2 -- and --CH2 CH2 CH2 --.
R3 is preferably hydrogen or C1 -C4 alkyl, in particular hydrogen.
R4 is preferably hydrogen or C1 -C8 alkyl which is unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl, preferably hydrogen or C1 -C4 alkyl, and in particular hydrogen.
Preferably, R3 and R4 independently of one another are hydrogen or C1 -C4 alkyl and B1 is a C1 -C10 alkylene radical.
The radical Y1 is preferably a radical of the formula (2a) or (2b), in particular a radical of the formula (2a).
The radical of the formula (3) is preferably a radical of the formula ##STR6## in which K1 and (R5)0-3 are as defined and preferred above.
The radical K1 is preferably a benzene, naphthalene, 6-hydroxypyrid-2-one, 1 -phenyl-5-aminopyrazole, 1-phenylpyrazol-5-one or indole radical, in particular a benzene, naphthalene, 1-phenyl-5-aminopyrazole or 1-phenylpyrazol-5-one radical, and preferably a naphthalene, 1 -phenyl-5-aminopyrazole or 1 -phenylpyrazol-5-one radical.
Examples of substituents of the radical K1 are the following:
C1 -C8 alkyl, in particular C1 -C4 alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl; C1 -C8 alkoxy, in particular C1 -C4 alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy or tert-butoxy; C2 -C6 -alkanoylamino, in particular C2 -C4 -alkanoylamino, for example propionylamino or, in particular, acetylamino; halogen, for example fluorine or, in particular, chlorine; hydroxyl; cyano; carbamoyl; carboxyl; sulfo; phenyl; amino and N-mono- or N,N-di-C1 -C4 alkylamino. In this case, the phenyl radicals mentioned can be unsubstituted or substituted, for example by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 -alkanoylamino, ureido, halogen, carboxyl or sulfo.
Particularly preferably, K1 is a radical of the formula ##STR7## in which R6 is methyl or carboxyl, R7 is amino or hydroxyl and (R8)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl and sulfo, or K1 is a radical of the formula ##STR8## in which R9 is hydrogen, amino or N-mono- or N,N-di-C1 -C4 alkylamino and
R10 is hydrogen or hydroxyl.
R6 is preferably methyl.
(R8)0-3 is preferably 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, halogen and sulfo.
R9 is preferably amino or N-mono- or N,N-di-C1 -C4 alkylamino, in particular amino.
R1 is preferably hydrogen.
The radicals of the formula (6) preferably contain only one sulfo group.
Preferred radicals K1 of the formula (6) are those of the formula ##STR9## in which R10 is hydrogen or hydroxyl, in particular hydrogen.
The radical A1 in the dye of the formula (1), as a radical of a polyazo, metal complex azo, anthraquinone, formazan, phthalocyanine or dioxazine dye, can contain the substituents customary in organic dyes bonded to its basic structure.
Examples of substituents in the radical A1 are: alkyl groups having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl or butyl, it being possible for the alkyl radicals to be further substituted, for example by hydroxyl, sulfo or sulfato; alkoxy groups having 1 to 4 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy or butoxy, it being possible for the alkyl radicals to be further substituted, for example by hydroxyl, sulfo or sulfato; phenyl which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo; acylamino groups having 1 to 8 carbon atoms, in particular such alkanoylamino groups, for example acetylamino or propionylamino; benzoylamino which is unsubstituted or substituted in the phenyl ring by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo; phenylamino which is unsubstituted or substituted in the phenyl ring by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo; N,N-di-β-hydroxyethylamino; N,N-di-β-sulfatoethylamino; alkylsulfonyl having 1 to 4 carbon atoms, such as methylsulfonyl or ethylsulfonyl; trifluoromethyl; nitro; amino; cyano; halogen, such as fluorine, chlorine or bromine; carbamoyl; sulfamoyl; N-mono- or N,N-dialkylsulfamoyl having in each case 1 to 4 carbon atoms; N-phenylsulfamoyl which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo; ureido; hydroxyl; carboxyl; sulfomethyl or sulfo.
A1 as a radical of a polyazo dye is, in particular, a radical of a disazo dye, preferably a radical of the formula ##STR10## in which D is a radical of the benzene or naphthalene series, M is the radical of a central component of the benzene or naphthalene series and K2 is a radical of the benzene or naphthalene series or a heterocyclic radical.
The radical K2 here is as defined and preferred above for K1.
Examples of substituents of the radicals D and M are the following:
C1 -C8 alkyl, in particular C1 -C4 alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl; C1 -C8 alkoxy, in particular C1 -C4 alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy or tert-butoxy; C2 -C6 alkanoylamino, in particular C2 -C4 alkanoylamino, for example propionylamino or, in particular, acetylamino; halogen, for example fluorine or, in particular, chlorine; hydroxyl; cyano; carbamoyl; carboxyl; sulfo; phenyl; amino and N-mono- or N,N-di-C1 -C4 alkylamino. In this case, the phenyl radicals mentioned can be unsubstituted or substituted, for example by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, ureido, halogen, carboxyl or sulfo.
Preferred substituents of the radicals D and M are C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino or N-mono- or N,N-di-C1 -C4 alkylamino. Particularly preferred substituents of the radicals D and M are C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, sulfo, amino or N-mono- or N,N-di-C1 -C4 alkylamino.
Particularly preferred radicals A1 of a disazo dye are radicals of the formula ##STR11## in which K2 is as defined and preferred above and (R11)0-3 and (R12)0-3 independently of one another are 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy,
C2 -C4 alkanoylamino, halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino and N-mono- or N,N-di-C1 -C4 alkylamino. (R,11)0-3 and (R12)0-3 preferably independently of one another are 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, sulfo amino and N-mono or N,N-di-C1 -C4 alkylamino. (R,11)0-3 and (R12)0-3 especially preferably independently of one another are 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, halogen, hydroxyl, sulfo amino
Especially preferred radicals A1 of a disazo dye are radicals of the formula ##STR12## in which K2, (R11)0-3 and (R12)0-3 are as defined and preferred above.
A1 as the radical of an anthraquinone dye is, in particular, a radical of the formula ##STR13## in which G is a phenylene radical which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo, or a cyclohexylene, phenylenemethylene or C2 -C6 alkylene radical.
G is preferably a phenylene radical which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo, in particular by C1 -C4 alkyl or sulfo.
Particularly important radicals A1 of an anthraquinone dye are those of the formula ##STR14## in which (R13)0-3 is 0 to 3 identical or different substituents chosen from the group consisting of C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl and sulfo. R13 here is particularly preferably C1 -C4 alkyl, in particular methyl. The radical of the formula (12) preferably contains two sulfo groups.
The radical A1 is preferably a radical of the formula (3) or the radical of a disazo or anthraquinone dye, these radicals mentioned being as defined and preferred above.
Preferred dyes of the formula (1) are those in which A1 is a radical of the formula (3), (9) or (11). K1 and K2 here are preferably radicals of the formula (5) or (6), in particular radicals of the formula (5) or (7). The radicals R1, R2, X1 and Y1 here are as defined and preferred above.
Particularly preferred dyes of the formula (1) are those in which A1 is a radical of the formula (4), (9) or (11). K1 and K2 here are preferably radicals of the formula (5) or (6), in particular radicals of the formula (5) or (7). The radicals R1, R2, X1 and Y1 here are as defined and preferred above.
Especially preferred dyes of the formula (1) are those in which A1 is a radical of the formula (4), (10) or (12). K1 and K2 here are preferably radicals of the formula (5) or (6), in particular radicals of the formula (5) or (7). The radicals R1, R2, X1 and Y1 here are as defined and preferred above.
The dyes of the formula (1) can be obtained, for example, by reacting cyanuric halide, in particular cyanuric fluoride or, preferably, cyanuric chloride, with a compound of the formula
A1 --NHR1, (13)
a compound of the formula
X1 -NHR2 ( 14)
and a compound of the formula
Y1 -H (15)
in which A1, X1, Y1, R1 and R2 are as defined under formula (1).
Preferably, the cyanuric halide is first reacted with approximately stoichiometric amounts of a compound of the formula (13) at a temperature of -5° to 20°C, preferably 0° to 5°C, the pH being kept neutral to acid, preferably at 2 to 7, in particular 2 to 4, by addition of suitable bases, for example alkali metal bases, such as lithium hydroxide or carbonate, sodium hydroxide or carbonate or potassium hydroxide or carbonate. Approximately stoichiometric amounts of a compound of the formula (14) are advantageously added to the resulting reaction mixture, and this compound is reacted with the triazine derivative at slightly elevated temperature, preferably at 10° to 60°C, in particular 15 to 30°C, and at a neutral to slightly acid pH, which is preferably 6 to 7.
Another possibility comprises first reacting the cyanuric halide with an intermediate of the compound of the formula (13), for example a diazo component in the case of azo dye radicals, and then reacting the product to give the corresponding dye radical A1, for example by diazotization and coupling. This reaction to give the dye radical can be carried out, for example, preferably directly after the reaction of the cyanuric halide with the intermediate, or also during the subsequent course of the synthesis of the dye of the formula (1).
The triazinyl compounds obtainable by the processes described above still contain a halogen atom, which can be converted into a group Y1 by reaction with a compound of the formula (15) at elevated temperature, preferably 20° to 70°C, and at a neutral to slightly alkaline pH, which is, for example, 7 to 9, depending on the compound of the formula (15) employed. An excess of the compound of the formula (15) is advantageously employed.
The compounds employed in the above processes are known or can be obtained analogously to known compounds.
The dyes of the formula (1) are present either in the form of their free acid or, preferably, as salts thereof.
Possible salts are, for example, the alkali metal, alkaline earth metal or ammonium salts or the salts of an organic amine. Examples are the sodium, lithium, potassium or ammonium salts or the salt of mono-, di- or triethanolamine.
The definitition sulfo includes generally the free acid form (--SO3 H) as well as the salt form.
The dyes of the formula (1) are anionic acid dyes. In the dyes of the formula (1), the number of anionic groups, in particular the number of sulfo groups, is greater than or equal to the number of cationic groups. Preferably, the number of anionic groups is greater than the number of cationic groups. Cationic groups are to be understood as meaning those which carry a cationic charge under customary dyeing conditions. Examples are aliphatically bonded amino radicals. The nitrogen atoms present in the triazine ring and those bonded to the triazine radical carry no cationic charge. The total number of sulfo and sulfato groups of the dyes of the formula (1) is preferably greater than one. The total number of sulfo and sulfato groups of the dyes of the formula (1) is preferably two to four, in particular two or three, and preferably two.
The colourless fixing agents used, which contain sulfo or sulfato groups and contain at least two fibre-reactive groups, are preferably those in which the total number of sulfo and sulfato groups is 1 to 4, in particular 2 to 4.
The total number of fibre-reactive groups is preferably 2 to 6, in particular 2 or 3. Particularly preferred fibre-reactive groups are those of the following formulae (18) and (20a) to (20f).
Preferred fixing agents are those of the formula ##STR15## in which R14 and R15 independently of one another are hydrogen or substituted or unsubstituted C1 -C4 alkyl,
Y2 and Y3 independently of one another are fluorine, chlorine, amino, N-mono- or N,N-di-C1 -C4 alkylamino which is unsubstituted or substituted in the alkyl moiety, C5 -C7 cycloalkylamino which is unsubstituted or substituted in the cycloalkyl ring, phenylamino or N-C1 -C4 alkyl-N-phenylamino which are unsubstituted or substituted in the phenyl ring, or N-heterocyclic radicals, which may contain further hetero atoms,
L1 and L2 are a colourless, organic bridge member,
n is the number 0 or 1,
W1, W2, W3, W4 and W5 independently of one another are a radical of the formula ##STR16## in which R16 and R17 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy,
C2 -C4 alkanoylamino, ureido, halogen, carboxyl or sulfo,
Z is a radical of the formula --CH2 CH2 --U or --CH═CH2 and U is a leaving group, and
R is a radical of the formula
--SO2 Z, (20a)
--CONH--(CH2)2-3 --SO2 Z, (20b)
--NH--CO--CH(Hal)--CH2 --Hal, (20c)
--NH--CO--C(Hal)═CH2, (20d)
--NH--CO--CH═CH2 ( 20e)
or
--NH--CO--CH2 Cl (20f)
and Hal is halogen and Z is as defined above.
C1 -C4 alkyl R14 and R15 independently of one another are, for example, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The alkyl radicals mentioned can be unsubstituted or substituted, for example by hydroxyl, sulfo, sulfato, cyano or carboxyl. Preferred alkyl radicals are the corresponding unsubstituted radicals.
R14 and R15 are preferably hydrogen or C1 -C4 alkyl, in particular hydrogen.
R16 and R17 are preferably hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 -alkanoylamino, ureido, halogen or sulfo, in particular hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, and preferably hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy or sulfo. Particularly preferably, R16 is hydrogen and R17 is hydrogen or sulfo.
N-mono or N,N-di-C1 -C4 alkylamino Y2 and Y3 can be both the unsubstituted radicals and the radicals substituted in the alkyl moiety, for example by C1 -C4 alkyl, C1 -C4 alkoxy, hydroxyl, sulfo or sulfato. The radicals unsubstituted in the alkyl moiety are preferred.
C5 -C7 cycloalkylamino Y2 and Y3 can be both the unsubstituted radicals and the radicals substituted in the cycloalkyl ring, for example by C1 -C4 alkyl. The corresponding cyclohexyl radicals are preferred as such radicals.
Phenylamino or N-C1 -C4 alkyl-N-phenylamino Y2 and Y3 can be both the unsubstituted radicals and the radicals substituted in the phenyl ring, for example by C1 -C4 alkyl, C1 -C4 alkoxy, halogen, carboxyl or sulfo. These radicals are preferably unsubstituted in the phenyl ring.
N-heterocyclic radicals Y2 and Y3 which may contain further hetero atoms are, for example, morpholino or piperidin-1-yl.
Y2 and Y3 are preferably chlorine or fluorine, in particular chlorine. n is preferably the number 0.
The leaving group U is, for example, --Cl, --Br, --F, --OSO3 H, --SSO3 H, --OCO--CH3, --OPO3 H2, --OCO--C6 H5, --OSO2 C1 -C4 alkyl or --OSO2 --N(C1 -C4 alkyl)2. U is preferably a group of the formula --Cl, --OSO3 H or --OCO--CH3 and particularly preferably --Cl or --OSO3 H. U is especially preferably a group of the formula --OSO3 H.
The radical Z is preferably a radical of the formula --CH2 CH2 OSO3 H, --CH2 CH2 Cl or --CH═CH2, in particular a radical of the formula --CH2 CH2 OSO3 H or --CH2 CH2 Cl.
A radical of the formula (18) is, in particular, a radical of the formula --NH--(CH2)2 --O--(CH2)2 --SO2 Z, in which Z is as defined and preferred above.
Hal is preferably bromine or chlorine, in particular bromine.
R is preferably a radical of the formula (20a), (20c) or (20d), in particular a radical of the formula (20a) or (20c), and preferably a radical of the formula (20a).
L1 and L2 are preferably colourless, aliphatic or aromatic bridge members.
Aliphatic bridge members L1 and L2 are, for example, C2 -C12 alkylene radicals, in particular C2 -C6 alkylene radicals, which can be interrupted by 1, 2 or 3 members from the group consisting of --NH--, --N(CH3)-- or, in particular, --O--, and are unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl. Preferred substituents of the alkylene radicals L1 and L2 are hydroxyl, sulfo or sulfato, in particular hydroxyl. The alkylene radicals mentioned are preferably unsubstituted. C2 -C4 alkylene radicals, in particular the radical of the formula --CH2 CH2 --, are of particular importance.
Aliphatic bridge members L1 and L2, for example, are furthermore C5 -C9 cycloalkylene radicals, such as, in particular, cyclohexylene radicals. The cycloalkylene radicals mentioned can be unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, sulfo, halogen or carboxyl, in particular by C1 -C4 alkyl. Aliphatic bridge members L1 and L2 are furthermore methylene-cyclohexylene or methylene-cyclohexylene-methylene radicals which are unsubstituted or substituted in the cyclohexylene ring by C1 -C4 alkyl.
Aromatic bridge members L1 and L2 are, for example, C1 -C6 alkylenephenylene or, in particular, phenylene which are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, sulfo, halogen or carboxyl. Phenylene which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, is preferred here.
Aromatic bridge members L1 and L2 are furthermore, for example, radicals of the formula ##STR17## in which the benzene rings I and II are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy,
C2 -C4 alkanoylamino, sulfo, halogen or carboxyl and
L is a direct bond or a C2 -C10 alkylene radical, which can be interrupted by 1, 2 or 3 oxygen atoms, in particular a C2 -C4 alkylene radical, or
L is a bridge member of the formula --CH═CH--, --NH--, --CO--, --NH--CO--, --CO--NH--, --NH--CO--NH--, --NH--CO--CO--NH--,--O--, --S--or --SO2--, or
L is a bridge member of the formula ##STR18## in which Y4 is as defined and preferred above for Y2.
The benzene rings I and II of the above formula (21) are preferably unsubsituted or mono- or disubstituted. Preferred substituents are C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo. The benzene rings I and II of the above formula (21) are particularly preferably unsubsituted or monosubstituted by sulfo.
L is preferably a direct bond or a bridge member of the formula --CH=CH--, --NH--, --CO--, --NH--CO--, --CO--NH--, --NH--CO--NH--or --NH--CO--CO--NH-- or a bridge member of the formula (22), preferably a bridge member of the formula --CH═CH--, --NH--CO--or --CO--NH--, and in particular a bridge member of the formula --CH═CH--or --NH--CO--.
Preferred bridge members of the formula (21) are those in which the benzene rings I and II are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, and L is a direct bond or a bridge member of the formula --CH═CH--, --NH--, --CO--, --NH--CO--, --CO--NH--, --NH--CO--NH--or --NH--CO--CO--NH--or a bridge member of the formula (22), preferably a bridge member of the formula --CH═CH--, --NH--CO--or --CO--NH--, and in particular a bridge member of the formula --CH═CH-- or --NH--CO--.
Aromatic bridge members L1 and L2 are furthermore, for example, radicals of the formula ##STR19## in which the benzene rings III and IV are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, sulfo, halogen or carboxyl,
m is a number from 0 to 5,
U1, U2 and U3 independently of one another are radicals of the formula --NH--CO--, --CO--NH--, --NH--CO--NH--or --NH--CO--CO--NH--or of the above formula (22) and
V1 and V2 independently of one another are radicals of the formula ##STR20## in which R18, R19, R20, R21, R22 and R23 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, sulfo, halogen or carboxyl.
Y4 is preferably chlorine.
The benzene rings III and IV of the above formula (23) are preferably unsubstituted or mono- or disubstituted. Preferred subsituents are C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo. The benzene rings III and IV of the above formula (23) are particularly preferably unsubstituted or monosubstituted by sulfo.
R18, R19, R20, R21, R22 and R23 are preferably independently of one another hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular hydrogen or sulfo.
U1, U2 and U3 are preferably independently of one another radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH-- or of the above formula (22), in particular radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH--, and preferably radicals of the formula --NH--CO-- or --CO--NH--.
Preferred radicals U1, U2 and U3 of the above formula (22) are those in which Y4 is chlorine. m is preferably the number 0, 1 or 2, in particular the number 0 or 1, and preferably the number 0.
V1 and V2 are preferably radicals of the formula (24).
Preferred bridge members of the formula (23) are those in which the benzene rings III and IV are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, R18, R19, R20, R21, R22 and R23 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular hydrogen or sulfo, U1, U2 and U3 independently of one another are radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH-- or of the above formula (22), in particular radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH--, and preferably radicals of the formula --NH--CO-- or --CO--NH--, and
m is the number 0 or 1, in particular the number 0.
The bridge members L1 and L2 are preferably
a) C2 -C12 alkylene radicals, in particular C2 -C6 alkylene radicals, which can be interrupted by 1, 2 or 3 members from the group consisting of --NH--, --N(CH3)-- or, in particular,--O--, or
b) cyclohexylene, methylene-cyclohexylene or methylene-cyclohexylene-methylene radicals which are unsubstituted or substituted in the cyclohexylene ring by C1 -C4 alkyl, or
c) C1 -C6 alkylenephenylene or, in particular, phenylene which are unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, C2 -C4 alkanoylamino, sulfo, halogen or carboxyl, or
d) radicals of the formula (21), in which the benzene rings I and II are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, and
L is a direct bond or
a bridge member of the formula --CH═CH--, --NH--, --CO--, --NH--CO--, --CO--NH--, --NH--CO--NH-- or --NH--CO--CO--NH-- or a bridge member of the formula (22), preferably a bridge member of the formula --CH═CH--, --NH--CO-- or --CO--NH--, and in particular a bridge member of the formula --CH═CH--or --NH--CO--, or
e) radicals of the formula (23) in which the benzene rings III and IV are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, R18, R19, R20, R21, R22 and R23 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular hydrogen or sulfo, U1, U2 and U3 independently of one another are radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH-- or of the above formula (22), in particular radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH--, and preferably radicals of the formula --NH--CO-- or --CO--NH--, and
m is the number 0 or 1, in particular the number 0.
The bridge members L1 and L2 are particularly preferably
a) C2 -C6 alkylene radicals, or
b) phenylene which is unsubstituted or substituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, or
c) radicals of the formula (21), in which the benzene rings I and II are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, and L is a direct bond or a bridge member of the formula --CH═CH--, --NH--, --CO--, --NH--CO--, --CO--NH--, --NH--CO--NH-- or --NH--CO--CO--NH-- or a bridge member of the formula (22), preferably a bridge member of the formula --CH═CH--, --NH--CO-- or --CO--NH-- and in particular a bridge member of the formula --CH═CH-- or --NH--CO--, or
d) radicals of the formula (23), in which the benzene rings III and IV are unsubstituted or mono- or disubstituted by C1 -C4 alkyl, C1 -C4 alkoxy, halogen or sulfo, in particular sulfo, R18, R19, R20, R21, R22 and R23 independently of one another are hydrogen, C1 -C4 alkyl C1 -C4 alkoxy, halogen or sulfo, in particular hydrogen or sulfo, U1, U2 and U3 independently of one another are radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH-- or of the above formula (22), in particular radicals of the formula --NH--CO--, --CO--NH-- or --NH--CO--CO--NH-- and preferably radicals of the formula --NH--CO-- or --CO--NH--, and
m is the number 0 or 1, in particular the number 0.
Preferably, in the fixing agents of the formula (17)
R14, and R15 are identical,
L1 and L2 are identical and
W3, W4 and W5 are identical.
Particularly preferred fixing agents are those of the formula (16) or (17) in which
R14 and R15 are hydrogen or C1 -C4 alkyl, in particular hydrogen,
Y2 and Y3 are chlorine,
L1 and L2 are as defined and preferred above,
n is the number 0 or 1, preferably the number 0,
Z is a radical of the formula --CH2 CH2 OSO3 H, --CH2 CH2 Cl or --CH═CH2,
R is a radical of the formula (20a), (20c) or (20d), in particular a radical of the formula (20a) or (20c), and
Hal is bromine or chlorine, in particular bromine.
Fixing agents which are of particular interest are those of the formula (16) or those of the formula (17) in which n is the number 0. Fixing agents of the formula (16) are of special interest.
The present invention furthermore relates to the novel compounds of the formulae(16) and (17) in which R14, R15, Y2, Y3, L1, L2, W1, W2, W3, W4, W5 and n are as defined under formulae (16) and (17), with the proviso that if the compounds of the formula (16) contain a radical W1 and a radical W2 of the formula (19) and Y2 is chlorine or a phenyl radical which is substituted by sulfo and R is a radical of the formula (20a), (20c) or (20d), the compounds of the formula (16) do contain two radicals R which are different from one another, and the proviso that the compounds of the formula (17) do not contain two identical radicals W3 and W5 of the formula (19) if R is a radical of the formula (20a), (20c) or (20d) and Y3 is chlorine and n is the number 0 and L1 is a substituted or unsubstituted phenylene or a substituted or unsubstituted stilbene bridge member.
The novel compounds of the formulae (16) and (17) are as preferred above.
The present invention furthermore relates to processes for the preparation of the novel compounds of the formulae (16) and (17).
The process for the preparation of the novel compounds of the formula (16) comprises reacting cyanuric halide, in particular cyanuric fluoride or, preferably, cyanuric chloride, with a compound of the formula
W1 -H (26),
a compound of the formula
W2 -H (27)
and, if appropriate, a compound of the formula
Y2 -H (28)
in which W1 and W2 are as defined under formula (16) and Y2 is amino, N-mono- or N,N-di-C1 -C4 alkylamino which is unsubstituted or substituted in the alkyl moiety, C5 -C7 -cycloalkylamino which is unsubstituted or substituted in the cycloalkyl ring, phenylamino or N-C1 -C4 alkyl-N-phenylamino which are unsubstituted or substituted in the phenyl ring, or N-heterocyclic radicals which may contain further hetero atoms.
Preferably, the cyanuric halide is first reacted with approximately stoichiometric amounts of a compound of the formula (26) at a temperature of -5° to 20°C, preferably 0° to 5°C, the pH being kept neutral to acid, preferably at 2 to 7, in particular 2 to 4, by addition of suitable bases, for example alkali metal bases, such as lithium hydroxide or carbonate, sodium hydroxide or carbonate or potassium hydroxide or carbonate. Approximately stoichiometric amounts of a compound of the formula (27) are advantageously added to the resulting reaction mixture, and this compound is reacted with the triazine derivative at slightly elevated temperature, preferably at 10° to 60°C, in particular 15° to 30°C, and at a neutral to slightly acid pH, which is preferably 6 to 7. If the compounds of the formulae (26) and (27) are identical compounds, about 2 molar equivalents of the compound of the formula (26) are advantageously employed, and this compound is reacted with about 1 molar equivalent of cyanuric halide.
The triazinyl compounds obtainable according to the process described above still contain a halogen atom which, if desired, can be converted into an amino group, into an N-mono- or N,N-di-C1 -C4 alkylamino group which is unsubstituted or substituted in the alkyl moiety, into a C5 -C7 cycloalkylamino group which is unsubstituted or substituted in the cycloalkyl ring, into a phenylamino or N-C1 -C4 alkyl-N-phenylamino group, which are unsubstituted or substituted in the phenyl ring, or into an N-heterocyclic group Y2, which may contain further hetero atoms, by reaction with a compound of the formula (28) at elevated temperature, preferably 20° to 70°C, and at a neutral to slightly alkaline pH, which is, for example, 7 to 9, depending on the compound of the formula (28) employed.
The process for the preparation of the novel compounds of the formula (17) in which n is the number 0 comprises reacting a compound of the formula ##STR21## in any sequence with a compound of the formula ##STR22## and a compound of the formula ##STR23## in which R14, R5, L1, Y3, W3 and W5 are as defined under formula (17) and Hal is halogen, in particular fluorine or, preferably, chlorine.
The reaction of the compound of the formula (29) with the compounds of the formulae (30) and (31) is carried out, for example, at slightly elevated temperature, preferably 10° to 60°C, in particular 15° to 50°C, and at a neutral to slightly acid pH, which is preferably 5 to 7. If the compounds of the formulae (30) and (31) are identical compounds, about 2 molar equivalents of the compound of the formula (30) are advantageously employed and this compound is reacted with about 1 molar equivalent of the compound of the formula (29).
Another embodiment for the preparation of the novel compounds of the formula (17) in which n is the number 0 comprises first subjecting a compound of the formula (29) to a condensation reaction with cyanuric halide, in particular cyanuric fluoride or, preferably, cyanuric chloride, and then reacting the resulting product in any sequence with a compound of the formula H-W3 and a compound of the formula H-W5.
The reaction of the cyanuric halide with the compound of the formula (29) is carried out, for example, as described above for the reaction of cyanuric halide with the compound of the formula (26). The reaction of the reaction product thus obtained with a compound of the formula H-W3 and a compound of the formula H-W5 can be carried out as described above for the reaction of the compound of the formula (29) with the compounds of the formulae (30) and (31).
The process for the preparation of the novel compounds of the formula (17) in which n is the number 1 comprises reacting a compound of the formula ##STR24## in any desired sequence with the compounds of the formulae (30) and (31) and then reacting the resulting reaction product with a compound of the formula ##STR25## in which R14, R15, L1, L2, Y3, W3, W4 and W5 are as defined under formula (17) and Hal is halogen, in particular fluorine or, preferably, chlorine.
The reaction of the compound of the formula (32) with the compounds of the formulae (30) and (31) can be carried out as described above for the reaction of the compound of the formula (29) with the compounds of the formulae (30) and (31). The subsequent reaction of the reaction product with the compound of the formula (33) can be carried out analogously.
The compounds employed in the above processes are known or can be obtained analogously to known compounds.
The compounds of the formulae (16) and (17) are present either in the form of their free acid or, preferably, as salts thereof.
Salts are, for example, the alkali metal, alkaline earth metal or ammonium salts or the salts of an organic amine. Examples are the sodium, lithium, potassium or ammonium salts or the salt of mono-, di- or triethanolamine.
No special devices are necessary for the dyeing process according to the invention. The customary dyeing apparatuses and machines can be used.
The liquor ratio can be chosen within a wide range, for example from 1:5 to 1:60, in particular from 1:5 to 1:30.
Dyeing is carried out, for example, at a temperature of 80° to 110°C, in particular a temperature of 95° to 105° C. Dyeing is preferably carried out at a pH of 3 to 6, in particular a pH of 3 to 5.5, and preferably a pH of 4 to 5.
Dyeing by the exhaust method is preferred.
Fixing with the fixing agent can be carried out both during the dyeing process and subsequently.
The fixing agent is preferably used in an amount of 0.1 to 10% by weight, in particular 0.5 to 5% by weight and preferably 0.5 to 3% by weight, based on the weight of the fibre material to be dyed.
Fixing with the fixing agent is preferably carried out in one step, in which the pH is brought to a value greater than or equal to 6, preferably 6 to 12, and in particular 6 to 10. The pH is preferably brought here to a value greater than or equal to 7, preferably 7 to 12, and in particular 7 to 10.
Thus, for example, fixing can be carried out in a separate bath after the dyeing, dyeing being carried out without the presence of the fixing agent. It has also proved advantageous to increase the pH, as described above, in this fixing step.
According to a preferred embodiment, dyeing is carried out in the presence of the fixing agent, which, for example, is added to the dyebath during the dyeing process or even already at the start of the dyeing process. In this case, the pH is preferably increased, as described above for the fixing step, during the dyeing process or after this.
The process according to the invention is suitable, by methods known per se, for dyeing natural or synthetic polyamide fibre materials, for example fibre materials of silk and, in particular, wool and synthetic polyamides. Dyeing of natural polyamide fibre materials, in particular of wool, is preferred. The textile material defined above can be in the most diverse forms of processing, for example as fibre, yarn, woven fabric or knitted fabric.
Level dyeings with good allround properties, in particular good fastness to rubbing, wet processing, wet rubbing and light, are obtained. The wet fastness properties of the dyeings, which are improved by the treatment with the fixing agent, the dyeings simultaneously having a very good levelness, are to be emphasized
The following examples serve to illustrate the invention. The temperatures are stated in degrees Celsius, parts are parts by weight and the percentage data are based on percentages by weight, unless noted otherwise. Parts by weight bear the same relation to parts by volume as the kilogramme to the litre.
Preparation example 1
19.1 parts of 1,3-phenylenediamine-4-sulfonic acid (98.6%) are dissolved in 100 parts of water and 52 parts of an aqueous, 2 normal sodium hydroxide solution at a pH of 7, and the mixture is added dropwise to a mixture comprising 18.5 parts of cyanuric chloride, 100 parts of ice and 50 parts of water at a temperature of 5°C in the course of 50 minutes. During the dropwise addition, the pH is kept at a value of 3 to 3.5. The pH is then increased to 7 in the course of 70 minutes with 50 parts of an aqueous 2 normal sodium hydroxide solution. After one hour, 25 parts of hydrochloric acid (37%) and 200 parts of water are added, and 25 parts of an aqueous 4 molar sodium nitrite solution are metered in at a temperature of 5 to 15°C in the course of 25 minutes. After two hours, the excess sodium nitrite is destroyed with sulfamic acid. During this procedure, 22.5 parts of 2-naphthylamine-5-sulfonic acid are dissolved in 100 parts of water and 52 parts of an aqueous 2 normal sodium hydroxide solution at a pH of 7 and the solution is added dropwise to the reaction mixture in the course of 30 minutes. Thereafter, the pH is brought to a value of 7 in the course of 80 minutes by means of 112 parts of an aqueous 2 normal sodium hydroxide solution. A solution of 12.2 parts of N-ethylaniline in 100 parts of 1 molar hydrochloric acid is then added dropwise in the course of 15 minutes, followed by the addition of 101 parts of an aqueous 2 normal sodium hydroxide solution in the course of 50 minutes. 500 parts of an aqueous sodium chloride solution are added to the dark red reaction solution and the product which has precipitated out is filtered off, washed with 10% aqueous sodium chloride solution and dried in vacuo at a temperature of 70°C 52.5 parts of an intermediate compound of the formula ##STR26## are obtained.
10 parts of the intermediate product of the formula (101) are dissolved in 200 parts of water and the solution is added dropwise to a solution of 14 parts of 3-methylaminopropylamine in 14 parts of water at a temperature of 40°C in the course of 4 hours. The mixture is subsequently stirred at a temperature of 40°C for one hour and 25 parts of hydrochloric acid are then added. The product which has precipitated out is filtered off and washed with water. The moist material on the suction filter is introduced into 300 parts of water at a temperature of 70°C and neutralized with 10 parts of an aqueous 1 normal sodium hydroxide solution. The product is salted out with 30 parts of sodium chloride, filtered off at a temperature of 40°C and dried in vacuo at a temperature of 50°C 8.8 parts of a dye which, in the form of the free acid, is the compound of the formula ##STR27## are obtained. The resulting dye of the formula (102) dyes wool and synthetic polyamide fibre material in orange colour shades.
Preparation examples 2 to 25
The dyes shown in the form of the free acids in the following Table 1, which dye wool and synthetic polyamide fibre material in the colour shades shown in column 3, can be obtained in a manner analogous to the instructions in preparation example 1.
| TABLE 1 |
| __________________________________________________________________________ |
| Preparation- Colour shade on wool |
| example |
| Dye and polyamide |
| __________________________________________________________________________ |
| ##STR28## yellow |
| 3 |
| ##STR29## yellow |
| 4 |
| ##STR30## yellow |
| 5 |
| ##STR31## yellow |
| 6 |
| ##STR32## yellow |
| 7 |
| ##STR33## yellow |
| 8 |
| ##STR34## orange |
| 9 |
| ##STR35## orange |
| 10 |
| ##STR36## red |
| 11 |
| ##STR37## orange |
| 12 |
| ##STR38## red |
| 13 |
| ##STR39## red |
| 14 |
| ##STR40## red |
| 15 |
| ##STR41## red |
| 16 |
| ##STR42## red |
| 17 |
| ##STR43## red |
| 18 |
| ##STR44## red |
| 19 |
| ##STR45## blue |
| 20 |
| ##STR46## blue |
| 21 |
| ##STR47## blue |
| 22 |
| ##STR48## blue |
| 23 |
| ##STR49## blue |
| 24 |
| ##STR50## blue |
| 25 |
| ##STR51## blue |
| __________________________________________________________________________ |
Example 1
18.2 parts of 4,4'-diaminobiphenyl-2,2'-disulfonic acid are suspended in 100 parts of water and dissolved with 52 parts of an aqueous sodium carbonate solution (10%) at a pH of 6.5 to 7. This solution is added dropwise to a mixture comprising 18.4 parts of cyanuric chloride, 240 parts of acetone and 120 parts of ice at a temperature of 0°C in the course of 45 minutes. The pH here is kept at 2.5 with 48.5 parts of an aqueous sodium carbonate solution (10%). 51.8 parts of a 48% aqueous solution of 2-(2-aminoethoxy)-2'-chloro-diethyl sulfone hydrochloride are then added dropwise at a temperature of 5° to 15°C At the same time, the pH is kept at a value of 4 with a 10% aqueous sodium carbonate solution. Thereafter, the pH is slowly increased to a value of 7 with 80 parts of a 10% aqueous sodium carbonate solution. After a subsequent stirring time of one hour at room temperature, 25 parts of hydrochloric acid (37%) are added dropwise. The solvent is decanted off from the product which has precipitated out. The product is stirred briefly in 200 parts of methanol, filtered off and dried in vacuo. 33.7 parts of a compound which, in the form of the free acid, has the formula ##STR52## are obtained. Example 2
14.5 parts of 2-aminophenylsulfonyl-ethyl hydrogen sulfate are suspended in 50 parts of water and dissolved with 31 parts of an aqueous 1 molar sodium carbonate solution at a pH of 6.5. This solution is added dropwise to a mixture comprising 9.1 parts of cyanuric chloride, 100 parts of acetone and 50 parts of ice at a temperature of 0° to -5°C in the course of one hour. The pH here is kept at 2.5 with 24 parts of an aqueous 1 molar sodium carbonate solution. After a subsequent stirring time of 2 hours, a solution of 8.6 parts of 4,4'-diaminobiphenyl-2,2'-disulfonic acid in 50 parts of water and 22 parts of an aqueous 2 normal sodium hydroxide solution is added dropwise at a pH of 4 in the course of 30 minutes. The mixture is then stirred at a temperature of 35° to 40°C and a pH of 5.5 for 18 hours. 150 parts of an aqueous sodium chloride solution are added to the reaction solution. The product which has precipitated out is filtered off and dried in vacuo. 25 parts of a compound which, in the form of the free acid, has the formula ##STR53## are obtained. Examples 3 to 20
The compounds shown in the form of the free acids in the following Table 2 can be obtained in a manner analogous to the instructions in Example 1 or 2.
| TABLE 2 |
| - Example Compound |
| 3 |
| ##STR54## |
| (129) |
| 4 |
| ##STR55## |
| (130) |
| 5 |
| ##STR56## |
| (131) |
| 6 |
| ##STR57## |
| (132) |
| 7 |
| ##STR58## |
| (133) |
| 8 |
| ##STR59## |
| (134) |
| 9 |
| ##STR60## |
| (135) |
| 10 |
| ##STR61## |
| (136) |
| 11 |
| ##STR62## |
| (137) |
| 12 |
| ##STR63## |
| (138) |
| 13 |
| ##STR64## |
| (139) |
| 14 |
| ##STR65## |
| (140) |
| 15 |
| ##STR66## |
| (141) |
| 16 |
| ##STR67## |
| (142) |
| 17 |
| ##STR68## |
| (143) |
| 18 |
| ##STR69## |
| (144) |
| 19 |
| ##STR70## |
| (145) |
| 20 |
| ##STR71## |
| (146) |
Dyeing Example 1
100 parts of a woollen fabric are pretreated for 5 minutes at a temperature of 30°C and a pH of 4.5 in an aqueous bath which comprises 2000 parts of water, 5 parts of sodium sulfate, 2 parts of sodium acetate and 2 parts of 80% acetic acid. After addition of an aqueous solution comprising 0.9 part of the dye of the formula (102), the dye liquor is kept at a temperature of 30°C for a further 5 minutes and then heated to a temperature of 100°C at a heating-up rate of 1.5°C per minute. Dyeing is carried out at this temperature for 60 minutes, the bath is then cooled to 50°C and the dye liquor is drained off. The woolen fabric, which has been dyed in an orange colour shade, is rinsed and pretreated for 5 minutes at a temperature of 30°C and a pH of 7 in a fresh aqueous bath which comprises 2000 parts of water, 5 parts of sodium sulfate, 11.6 parts of disodium hydrogen phosphate and 7.6 parts of potassium hydrogen phosphate. After addition of an aqueous solution comprising 2 parts of the fixing agent of the formula (129), the dye liquor is kept at a temperature of 30°C for a further 5 minutes and then heated to 100°C at a heating-up rate of 1.5°C per minute. This temperature is maintained for 60 minutes. The bath is then cooled to a temperature of 50°C and the dye liquor is drained off. The woolen fabric is rinsed and dried. The resulting dyeing is level and has very good wet fastness properties.
Dyeing Example 2
100 parts of a woolen fabric are pretreated for 5 minutes at a temperature of 30°C and a pH of 4.5 in an aqueous bath which comprises 2000 parts of water, 5 parts of sodium sulfate, 2 parts of sodium acetate and 2 parts of 80% acetic acid. After addition of an aqueous solution comprising 0.9 part of the dye of the formula (102) and 2 parts of the fixing agent of the formula (129), the dye liquor is kept at a temperature of 30°C for a further 5 minutes and then heated to a temperature of 100°C at a heating-up rate of 1.5°C per minute. Dyeing is carried out at this temperature for 40 minutes, 15 parts of disodium hydrogen phosphate are added and dyeing is continued at a pH of 7 for a further 40 minutes. The bath is then cooled to 50°C and the dye liquor is drained off. The woolen fabric, which has been dyed in an orange colour shade, is rinsed and dried. The resulting dyeing is level and has very good wet fastness properties.
Dyeing Example 3
100 parts of a woolen fabric are pretreated for 5 minutes at a temperature of 30°C and a pH of 4.5 in an aqueous bath which comprises 2000 parts of water, 5 parts of sodium sulfate, 2 parts of sodium acetate and 2 parts of 80% acetic acid. After addition of an aqueous solution comprising 0.9 part of the dye of the formula (102), the dye liquor is kept at a temperature of 30°C for a further 5 minutes and then heated to a temperature of 100C., at a heating-up rate of 1.5°C per minute. Dyeing is carried out at this temperature for 40 minutes, 15 parts of disodium hydrogen phosphate and 2 parts of the fixing agent of the formula (129) are added and dyeing is continued at a pH of 7 for a further 40 minutes. The bath is then cooled to 50°C and the dye liquor is drained off. The woolen fabric, which has been dyed in an orange colour shade, is rinsed and dried. The resulting dyeing is level and has very good wet fastness properties.
Dyeing Examples 4 to 27
The procedure described in Dyeing Example 3 is repeated, using an equimolar amount of a dye according to Preparation Examples 2 to 25 instead of 0.9 part of the dye of the formula (102). A woolen fabric which has been dyed levelly and has good wet fastness properties is likewise obtained.
Instead of the process according to Dyeing Example 3, the procedure according to Dyeing Example 1 or 2 can also be followed.
Dyeing Examples 28 to 46
The procedure described in Dyeing Example 3 is repeated, except that an equimolar amount of one of the fixing agents according to Examples 1, 2 and 4 to 20 are used instead of 2 parts of the fixing agent of the formula (129). A woolen fabric which has been dyed levelly and has good wet fastness properties is likewise obtained.
Instead of the process according to Dyeing Example 3, the procedure according to Dyeing Example 1 or 2 can also be followed.
Adam, Jean-Marie, Casi, Francine, Bacher, Jean-Pierre
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